Avaliação do crescimento de erva-mate (Ilex paraguariensis A. St. - Hil.) em resposta à adição de composto orgânico proveniente da suinocultura.

Abstract

This work evaluated the initial growth of seedlings of yerba mate (Ilex paraguariensis A. St. - Hil.) Submitted to different fertilization doses with N, P and K, supplied via mineral and fertilization with swine organic compost (CO). The experiment was installed in a controlled greenhouse with automated irrigation, at the UFSM campus FW Forest Nursery, in a completely randomized design, in a bifactorial arrangement, with two pH ranges (4,7 and 5,5) and five fertilization (control, NK [S], NPK [S], CO 20%, CO 40%), totaling 10 treatments with 10 repetitions in Red Latosol soil. Height, neck diameter, dry mass of aerial part, root and total, leaf area surface, Dickson quality index and height and diameter increment at 150 days were evaluated. The data were submitted to analysis of variance (p <0,05) and compared using the Tukey test. The different treatments generated different responses and, in general, positively influenced the growth and quality of the seedlings. The greatest growth in height and diameter of the neck was observed for the fertilization CO 20%, with 50,44 cm plant-1 and 10,15 mm plant-1. Treatments with pH 4,7 show greater growth compared to pH 5,5.